Figure 5From: Sandwich ELISA for quantitative detection of human collagen prolyl 4-hydroxylaseThe response surface plot showing the effects of pab-β and GAR-AP concentrations. The FLU signal to background ratio was used as a response; mab-α concentration was set at the level of 0 (dilution 1/500). The antibody dilutions are presented in their coded values (Table 1).Back to article page